Automatic screw-holding device.



PATENTBD JUNE 2, 1903.

J. A. YATES. AUTOMATIC SCREW HOLDING DEVICE.

APPLIGATJOR PILEDDEO. 17, 1902..

MODEL.

THE uonms Pmm no Mm'o'umu. WASHINGTON D. c,

Patented June 2, 1903.

JOHN Y 'Es, OF nooKPoR'r, INDIANA.

AUTOMATIC SCREW-HOLDING DEVICE,

SPECIFICATION forming part of Letters Patent No. 729,830, dated June 2, 1903.

Application filed December 17,1902r Serial No. 135.623. (No model.)

To aZZ whom it may concern:

Be it known that I, JOHN A. YATES, a citizen of the United States, residing at Rookport, in the county of Spencer and State of Indiana, have invented certain new and useful Improvements in Automatic Screw-Holding Devices; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the letteis of reference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in automatic screw-holdin g devices adapted to be applied to the blade of a screw-driver and designed to hold a screw to be engaged by the screw-driver blade while forcing the same in place; and it consists in the provision of a flexible split shell adapted to telescope over the screw-driver blade and provided with yielding arms which are spoonshaped and have their free ends outwardly curve-d, said spoon-shaped portion forming concaved jaws adapted to en gage thetapering head of a screw.

The invention consists, further, in various details of construction, which will be hereinafter described and then specifically defined in the appended claim and is illustrated in the accompanying drawings, in which- Figure l is a side elevation showing my improved screw-holdin g device as applied to the blade of a screw-driver. Fig. 2 is a view at right angles to the view shown in Fig. 1 and showing the blade of the screw-driver in engagement with the slot of the screw held by Fig. 3 is a;

the flexible arms of the device. side elevation, partly in section, taken in a plane at right angles to Fig. 2, showing the screw-driver held in contact with a screw; and Fig. 4: is anenlarged sectional view of the device. w

Reference now being had to the details of the drawings by letter, Adesignates the blade of a screw-driven'ha'ving a taperingend A',-.

and B designates the hollow split shell of the screw-holding device, which is yieldinglyexpansible and adapted to telescopeover the blade of the screw-driver and so constructed shape.

as to grip the screw-driver blade suiiiciently tight to hold the device in place on any part of the blade that the operator may desire.

In the drawings I have shown this shell of cylindrical form, adapted to fit the cylindrical shank portion of a screw-driver blade; but, if desired, this may be of different shapes for instance, flat, in order to fit blades of such Projecting from one end of said shell are two flexible arms G, which are concaved on their inner faces and outwardly bent at C, while their extreme ends are curved out- Ward, as shown at D. The portion of said arms adjacent to said ends is beveled, as at E, in order to conform. to the taper of the head of a screw. At the free ends of said til it engages the slot in the screw, as shown in Fig. 2. In this position it will be observed th'atTthe beveled head of a screw is in contact with the concaved walls of the jaws and the apparatus is in position to operate in the act of.forc ing the screw into any material. If desired to use the screw-driver independent of the device, the latter may be pushed up longitudinally from the end of the blade of the screw-driver, the device holding itself in place by means of the shank portion, as beforedescribed, and the screw-driver then usedintheusualmanner. Theshell,whichis yieldin'gly expansible and of different shapes, may beheld to cylindrical or fiat blades.

While I have shown a particular construction of device embodying my invention, it will be understood that I may make alterations in the detailed construction of the same without departing from the spirit of the invention.

iI-Iaving thusfully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

of the shell at positions diametrically oppo- In testimony whereof I hereunto affix my site, said arms being contracted adjacent to signature in presence of two witnesses. their free ends and having spoon-shaped portions which merge into oppositely and out- JOHN XATES' 5 Wardly curved ends forming eoncaved jaws Witnesses: adapted to receive and hold a screw, as set ALICEB. YATES,

forth.

T. J REINHARD. 

